<template>

    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="/">商品管理</a></el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">

                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddpage">添加商品</el-button>
                </el-col>
            </el-row>
            <!-- table表格区域 -->
            <el-table :data="goodsList" border stripe>
                <el-table-column type="index" label="序号"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name">
                </el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="95px">
                </el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="70px">
                </el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="140px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}

                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini">

                        </el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)">

                        </el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data() {
        return {
            // 存放所有的商品列表数据
            goodsList: [],
            // 提交的参数对象
            queryInfo: {
                // 查询参数
                query: "",
                // 当前页码
                pagenum: 1,
                // 每页显示的条数
                pagesize: 10
            },
            // 总数据条数
            total: 0
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        // 根据分页获取所有的商品列表数据
        async getGoodsList() {
            // 发起网络请求获取商品列表数据
            const { data: res } = await this.$http.get(`goods`, { params: this.queryInfo })
            if (res.meta.status !== 200) {
                return this.$message.error("获取商品列表数据失败！")
            }
            this.$message.success("获取商品列表数据成功！")
            // 获取商品列表数据成功，赋值给data数据
            console.log(res.data)

            this.goodsList = res.data.goods
            this.total = res.data.total
        },
        //  监听每页显示的条数发生改变的事件
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 监听页码值发生改变的事件
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        // 根据商品id删除商品信息
        async removeById(goods_id) {
            const confirmResult = await this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
                confirmButtonText: "确定",
                cancelButtonText: "取消",
                type: "warning"
            }).catch(error => error)
            // console.log(confirmResult)
            if (confirmResult !== "confirm") {
                return this.$message.info("您已取消删除操作")
            }
            // 删除商品信息
            // 发起网络请求删除商品
            const { data: res } = await this.$http.delete(`goods/${goods_id}`)
            // console.log(res)
            if (res.meta.status !== 200) {
                return this.$message.error("删除商品失败")
            }
            this.$message.success("删除商品成功")
            // 重新获取商品列表数据
            this.getGoodsList()
        },
        // 监听去往添加商品的页码事件
        goAddpage() {
            this.$router.push("/goods/add")
        }
    }
}
</script>

<style lang="less" scoped>
</style>